Thread: pgsql: Add GUC variables for stat tracking and timeout as PGDLLIMPORT

Add GUC variables for stat tracking and timeout as PGDLLIMPORT

This helps integration of extensions with Windows.  The following
parameters are changed:
- idle_in_transaction_session_timeout (9.6 and newer versions)
- lock_timeout
- statement_timeout
- track_activities
- track_counts
- track_functions

Author: Pascal Legrand
Reviewed-by: Amit Kamila, Julien Rouhaud, Michael Paquier
Discussion: https://postgr.es/m/1579298868581-0.post@n3.nabble.com
Backpatch-through: 9.4

Branch
------
REL9_5_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/4a49149b9d74d2f9479cb73227e9646c901c84e6

Modified Files
--------------
src/include/pgstat.h       | 6 +++---
src/include/storage/proc.h | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)